Adds release note.
diff --git a/CHANGELOG.rst b/CHANGELOG.rst
index e2f1890..4d7a9a8 100644
--- a/CHANGELOG.rst
+++ b/CHANGELOG.rst
@@ -6,6 +6,10 @@
 
 .. note:: This version is not yet released and is under active development.
 
+* Support serialization of certificate signing requests using the
+  ``public_bytes`` method of
+  :class:`~cryptography.x509.CertificateSigningRequest`.
+
 0.9 - 2015-05-13
 ~~~~~~~~~~~~~~~~